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Glycol in a Snow-Melt System
I am doing up an estimate to replace the propylene glycol in a snow-melt system at a self-serve car wash. Went there today on a service call and found that the glycol solution had been freezing. What is the typical glycol-to-water concentration for a snowmelt system? I haven't done one before. I've done the typical 50/50 solution in home heating systems...should a snow-melt system have a stronger concentration?? I used to have a chart for this but can't find it now.